CN219867877U - Ultralow nitrogen hydrogen combustor - Google Patents
Ultralow nitrogen hydrogen combustor Download PDFInfo
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- CN219867877U CN219867877U CN202320287606.2U CN202320287606U CN219867877U CN 219867877 U CN219867877 U CN 219867877U CN 202320287606 U CN202320287606 U CN 202320287606U CN 219867877 U CN219867877 U CN 219867877U
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- hydrogen
- combustion
- inlet
- air
- wind
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 76
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 76
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 16
- 238000009792 diffusion process Methods 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model discloses an ultralow nitrogen hydrogen burner which comprises a first combustion-supporting air inlet, a second combustion-supporting air inlet, a third combustion-supporting air inlet, a first hydrogen inlet, a second hydrogen inlet, a first hydrogen cavity, a second hydrogen cavity, a combustion-supporting air channel, a central tube, a first air jet tube, a second air jet tube, a burner body and the like; compared with the prior art, the utility model is provided with three ventilation channels which are rotational flow wind and direct current wind combined diffusion wind in sequence, the front end of the combustion-supporting wind inlet is provided with the wind inlet box, the wind inlet box is provided with the combustion-supporting wind inlet and the circulating smoke inlet, the combustion-supporting wind inlet and the circulating smoke inlet are divided into two channels, and an electric air regulating device is designed on each channel and is respectively communicated with the rotational flow wind, the direct current wind and the diffusion wind of the ventilation channels, so that the ultra-low nitrogen hydrogen combustor with high efficiency, energy conservation, safety and environmental protection is provided.
Description
Technical Field
The utility model relates to the technical field of combustors, in particular to an ultralow nitrogen hydrogen combustor.
Background
The existing low NOx combustion technology is mainly researched aiming at natural gas fuel, natural gas belongs to high-end fuel, when the low NOx combustion technology is used for industrial production, the price is higher, the cost of industrial products is greatly increased, the NOx emission of a conventional hydrogen combustor is up to 600mg-800/Nm, although various manufacturers also develop researches on reduction of thermal NOx generation around the technology of reducing the combustion temperature, adopting flue gas recirculation and the like, the low NOx combustion technology cannot achieve effective staged combustion and regional combustion due to the limitation that the conventional combustor is flush with or contracted in a furnace wall, the NOx emission still reaches 200mg/Nm, and the ultralow nitrogen combustion of hydrogen cannot be achieved, so that a technology is needed to make up for the defect.
Disclosure of Invention
The utility model aims to solve the problems and provide an ultralow nitrogen and hydrogen combustor.
In order to solve the problems, the utility model provides a technical scheme that: an ultralow nitrogen hydrogen burner comprises a first combustion-supporting air inlet, a second combustion-supporting air inlet, a third combustion-supporting air inlet, a first hydrogen inlet, a second hydrogen inlet, a first hydrogen cavity, a second hydrogen cavity, a combustion-supporting air channel, a central tube, a first air jet pipe, a second air jet pipe and a burner body; the left side of the lower surface of the burner body is sequentially and fixedly communicated with a first combustion-supporting air inlet, a second combustion-supporting air inlet and a third combustion-supporting air inlet in parallel; the left side of the inner part of the burner body cavity is provided with a first hydrogen cavity, and the right side of the inner part of the burner body cavity is provided with a second hydrogen cavity; a first hydrogen inlet is fixedly connected to the left side surface of the burner body, and the first hydrogen inlet is communicated with a first hydrogen cavity; the middle end of the upper surface of the burner body is fixedly connected with a second hydrogen inlet which is communicated with a second hydrogen cavity; the cyclone wind channel is positioned at the innermost layer of the burner body, and the right end of the cyclone wind channel is provided with a cyclone device; the cyclone air channel is provided with a central tube, a plurality of first air ejector tubes are arranged around the central tube, and the central tube and the first air ejector tubes are communicated with a first hydrogen cavity; the periphery of the outer surface of the right side of the burner body is fixedly connected with a plurality of second air ejector tubes in a circular array mode, and the second air ejector tubes are communicated with a second hydrogen cavity; the combustion air passage is located in the burner body.
Preferably, the combustion-supporting air channel has the following specific structure: comprises a rotational flow wind channel, a direct current wind channel, a diffusion wind channel, a cyclone device and a diffusion cylinder; the cyclone wind channel forms the inner tube of the direct current wind channel in the burner body, the inner tube and the outer tube of the direct current wind channel are of cylindrical structures, the outer tube of the direct current wind channel forms the inner tube of the diffusion wind channel, the right end of the direct current wind channel is connected with the diffusion tube, the outer tube of the diffusion wind channel forms the inner tube of the burner body, the cyclone wind channel and the direct current wind channel are embedded in the inner part of the diffusion wind channel, and the diffusion wind channel extends out of the furnace wall of the furnace.
Preferably, the inclination angle of the chamber wall of the diffusion cylinder is 14-16 degrees.
Preferably, the central tube has a length greater than the first gas lance.
Preferably, the second gas lance length is greater than the burner body.
The utility model has the beneficial effects that: compared with the prior art, the utility model is provided with three ventilation channels which are rotational flow wind and direct current wind combined diffusion wind in sequence, the front end of the combustion-supporting wind inlet is provided with the wind inlet box, the wind inlet box is provided with the combustion-supporting wind inlet and the circulating smoke inlet, the combustion-supporting wind inlet and the circulating smoke inlet are divided into two channels, and an electric air regulating device is designed on each channel and is respectively communicated with the rotational flow wind, the direct current wind and the diffusion wind of the ventilation channels, so that the ultra-low nitrogen hydrogen combustor with high efficiency, energy conservation, safety and environmental protection is provided.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a right side structure diagram of the present utility model.
1-a first combustion-supporting air inlet; 2-a second combustion-supporting air inlet; 3-a third combustion-supporting air inlet; 4-a first hydrogen inlet; 5-a second hydrogen inlet; 6-a first hydrogen cavity; 7-a second hydrogen cavity; 8-a rotational flow wind channel; 9-direct current wind channels; 10-diffusion wind channels; 11-cyclone means; 12-a diffusion cylinder; 13-a central tube; 14-a first gas lance; 15-a second gas lance; 16-furnace wall; 17-burner body.
Detailed Description
As shown in fig. 1 and 2, the following technical solutions are adopted in this embodiment: an ultralow nitrogen hydrogen burner comprises a first combustion air inlet 1, a second combustion air inlet 2, a third combustion air inlet 3, a first hydrogen inlet 4, a second hydrogen inlet 5, a first hydrogen cavity 6, a second hydrogen cavity 7, a combustion air channel, a central tube 13, a first air jet tube 14, a second air jet tube 15 and a burner body 17; the left side of the lower surface of the burner body 17 is fixedly communicated with a first combustion-supporting air inlet 1, a second combustion-supporting air inlet 2 and a third combustion-supporting air inlet 3 in parallel in sequence; the left side of the inner part of the cavity of the burner body 17 is provided with a first hydrogen cavity 6, and the right side of the inner part of the cavity of the burner body 17 is provided with a second hydrogen cavity 7; the left side surface of the burner body 17 is fixedly connected with a first hydrogen inlet 4, and the first hydrogen inlet 4 is communicated with a first hydrogen cavity 6; the middle end of the upper surface of the burner body 17 is fixedly connected with a second hydrogen inlet 5, and the second hydrogen inlet 5 is communicated with a second hydrogen cavity 7; the cyclone wind channel 8 is positioned at the innermost layer of the burner body 17, and the right end is provided with a cyclone device 11; the cyclone air channel 8 is provided with a central tube 13, a plurality of first air injection tubes 14 are arranged around the central tube 13, and the central tube 13 and the first air injection tubes 14 are communicated with the first hydrogen cavity 6; the periphery of the outer surface of the right side of the burner body 17 is fixedly connected with a plurality of second air ejector tubes 15 in a circular array mode, and the second air ejector tubes 15 are communicated with the second hydrogen cavity 7; the combustion air channel is located in the burner body 17.
As shown in fig. 1 and 2, the specific structure of the combustion-supporting air channel is as follows: comprises a cyclone wind channel 8, a direct current wind channel 9, a diffusion wind channel 10, a cyclone device 11 and a diffusion cylinder 12; the cyclone wind channel 8 forms an inner cylinder of the direct current wind channel 9 in the burner body 17, the inner cylinder and the outer cylinder of the direct current wind channel 9 are of cylindrical structures, the outer cylinder of the direct current wind channel 9 forms an inner cylinder of the diffusion wind channel 10, the right end of the direct current wind channel 9 is connected with the diffusion cylinder 12, the outer cylinder of the diffusion wind channel 10 forms the inner cylinder of the burner body 17, the cyclone wind channel 8 and the direct current wind channel 9 are embedded in the diffusion wind channel 10, and the diffusion wind channel 10 extends out of the furnace wall 16 of the furnace.
Wherein the inclination angle of the chamber wall of the diffusion cylinder 12 is 14-16 degrees; the length of the central tube 13 is longer than that of the first air injection tube 14; the second gas lance 15 has a length which is greater than the burner body 17.
The use state of the utility model is as follows: when the burner is in operation, combustion-supporting air enters the burner through the three inlets, the channels corresponding to each other in sequence are the cyclone air channel 8, the direct-current air channel 9 and the diffusion air channel 10, and the air regulating device is arranged at each inlet, so that the air quantity ratio entering each channel can be manually controlled, the burner has good regulation performance, and the flame shape and the length of the burner can be controlled. The swirl air channel 8 is positioned at the innermost layer of the hydrogen burner, the combustion-supporting oxygen amount provided by the channel accounts for about 20% of the total amount, the combustion-supporting oxygen is used for guaranteeing the combustion stability of the hydrogen root, the direct-current air channel 9 is positioned at the close outer side of the swirl air channel 8, no blocking structure exists at the nozzle, the air can be sprayed out in a high-speed advection, the combustion-supporting oxygen amount provided by the channel accounts for about 35% of the total amount, the combustion-supporting oxygen amount provided by the channel is used for providing residual oxygen required by the combustion of the hydrogen entering through the first hydrogen inlet 4, and the residual oxygen participates in the early combustion of the hydrogen entering through the second hydrogen inlet 5; the diffusion wind channel 10 is positioned at the close outer side of the direct current wind channel 9, the bell-mouth-shaped diffusion cylinder 12 of the inner ring is provided with an angle of 15 degrees to diffuse the diffusion wind outwards, meanwhile, the tail part of the diffusion cylinder 12 and the outer cylinder of the diffusion wind channel form a narrower wind channel, the wind speed and rigidity of the diffusion wind are effectively improved, the diffusion wind is wrapped by the hydrogen sprayed by the second air spraying pipe 15, the premixing is carried out in the furnace, and the hydrogen is combusted to the middle part of the furnace in length by matching with the length of the second air spraying pipe 15 extending out of the end face of the burner, so that the aim of gas regional combustion can be achieved; the diffused air accounts for 45% of the total air quantity, and the air required by hydrogen combustion is fully complemented at the middle and rear parts of the flame so as to ensure the burnout rate. Meanwhile, the diffusion wind washes the diffusion cylinder 12 of the inner ring, the part can be effectively cooled to prevent the central root hydrogen from stably burning and corroding the diffusion cylinder 12, the combustion-supporting wind is distributed three times and at different angles, the hydrogen is distributed twice and in different areas, the burner realizes graded and sectional burning, and the temperature of the flame is effectively reduced, so that the yield of 85 percent of NOx can be reduced, the emission of NOx can be less than 50mg/Nm, and the aim of ultralow nitrogen burning is fulfilled.
In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
While the basic principles and main features of the present utility model and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing specification merely illustrate the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims and their equivalents.
The control mode of the utility model is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power supply are common knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and the wiring arrangement in detail.
Claims (5)
1. An ultralow nitrogen hydrogen burner, characterized in that: the device comprises a first combustion-supporting air inlet (1), a second combustion-supporting air inlet (2), a third combustion-supporting air inlet (3), a first hydrogen inlet (4), a second hydrogen inlet (5), a first hydrogen cavity (6), a second hydrogen cavity (7), a combustion-supporting air channel, a central tube (13), a first air jet tube (14), a second air jet tube (15) and a burner body (17);
the left side of the lower surface of the burner body (17) is fixedly communicated with a first combustion-supporting air inlet (1), a second combustion-supporting air inlet (2) and a third combustion-supporting air inlet (3) in sequence in parallel;
the left side of the inner part of the cavity of the burner body (17) is provided with a first hydrogen cavity (6), and the right side of the inner part of the cavity of the burner body (17) is provided with a second hydrogen cavity (7);
a first hydrogen inlet (4) is fixedly connected to the left side surface of the burner body (17), and the first hydrogen inlet (4) is communicated with a first hydrogen cavity (6);
the middle end of the upper surface of the burner body (17) is fixedly connected with a second hydrogen inlet (5), and the second hydrogen inlet (5) is communicated with a second hydrogen cavity (7);
the cyclone wind channel (8) is positioned at the innermost layer of the burner body (17), and the right end is provided with a cyclone device (11);
the cyclone air channel (8) is provided with a central tube (13), a plurality of first air ejector tubes (14) are arranged around the central tube (13), and the central tube (13) and the first air ejector tubes (14) are communicated with the first hydrogen cavity (6);
a plurality of second air ejector pipes (15) are fixedly connected to the periphery of the outer surface of the right side of the burner body (17) in a circular array mode, and the second air ejector pipes (15) are communicated with the second hydrogen cavity (7);
the combustion air channel is located in the burner body (17).
2. An ultra low nitrogen hydrogen burner as claimed in claim 1, wherein: the combustion-supporting air channel has the following specific structure: comprises a rotational flow wind channel (8), a direct current wind channel (9), a diffusion wind channel (10), a cyclone device (11) and a diffusion cylinder (12);
the cyclone air channel (8) forms an inner cylinder of the direct-current air channel (9) in the combustor body (17), the inner cylinder and the outer cylinder of the direct-current air channel (9) are of cylindrical structures, the outer cylinder of the direct-current air channel (9) forms an inner cylinder of the diffusion air channel (10), the right end of the direct-current air channel (9) is connected with the diffusion cylinder (12), the outer cylinder of the diffusion air channel (10) forms the inner cylinder of the combustor body (17), the cyclone air channel (8) and the direct-current air channel (9) are embedded in the diffusion air channel (10), and the diffusion air channel (10) stretches out of a furnace wall (16) of the furnace.
3. An ultra low nitrogen hydrogen burner as claimed in claim 2, wherein: the inclination angle of the chamber wall of the diffusion cylinder (12) is 14-16 degrees.
4. An ultra low nitrogen hydrogen burner as claimed in claim 1, wherein: the length of the central tube (13) is longer than that of the first air injection tube (14).
5. An ultra low nitrogen hydrogen burner as claimed in claim 1, wherein: the second gas lance (15) has a length that is greater than the burner body (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320287606.2U CN219867877U (en) | 2023-02-23 | 2023-02-23 | Ultralow nitrogen hydrogen combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320287606.2U CN219867877U (en) | 2023-02-23 | 2023-02-23 | Ultralow nitrogen hydrogen combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219867877U true CN219867877U (en) | 2023-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320287606.2U Active CN219867877U (en) | 2023-02-23 | 2023-02-23 | Ultralow nitrogen hydrogen combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219867877U (en) |
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2023
- 2023-02-23 CN CN202320287606.2U patent/CN219867877U/en active Active
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